NO label on the box says Brandis 5628 and Navy 4954. Stencil on the box corner looks like 5628 as well. No image of the Brandis number on the arc of the instrument, but I'll ask the seller to look for it.

<<<<<I have found the serial number: 5628. I found this on the left end of the arc (as you pointed out) and also stamped on the inside of the box and on the certificate of inspection. The naval observatory number is 4954. This number is also written in pencil on the inside of the box twice and on the certificate of inspection. The only other number I see is written in pencil twice in the box above the naval observatory number. This reads, "DD 359".

I note that you folks are collating a series of Sextant Manufacturer's Serial Numbers against Naval Observatory Certification Numbers. In my possession is a Keuffel and Esser sextant, model #5227 that was manufactured about 1915/16 with K & E serial number 31475.

The box is matching to the sextant.

The Naval Observatory number is found on a shield that is inletted into the outside lid of the box, as well as being engraved on the arc of the sextant itself, and that N.O. is 616.

There is also a "Certificate of Inspection" U.S. Naval Observatory card in the box with the correct mfg S.N. and N.O. of 616 dated 9/29/41.

There was an earlier Naval Observatory "Cert" card that had been glued inside the lid, but there is no written information left on its remains, and only just enough paper and printing to tell with certainty that is what it was. So this confirms that it had been "Certified" by the Naval Observatory at a much earlier date, most certainly in the "teens" when it was still quite new, but sadly the actual date of that earlier inspection, and any of its results. have been lost to us.

I hope you find this information of some use to you in your wonderful quest!

Email #1"Hello, yes the number is marked on the arc and is 4672 and the box has the matching number ink stamped on the inside of the lid. No other numbers or info on the box except for the company name. thanks"

Email #2"Hi, I made a mistake in the last email. The number on the box is 4667 and not the same as the one on the sextant, 4672."

So we have Sextant Brandis #4672 / NO # 1889 inside the box originally holding Brandis 4667

New Brandis on eBay, looks like Navy 1565. The NO sticker from 1950 lists the maker's number as No No. which seems odd, perhaps they just didn't look hard enough. N.O. 1565 can be seen etched on the arc.

1565 is also written on the outside of the box, along with some other numbers. looks like 62306-004879, but the last 4 digits are partially hidden by the handle. I'm thinking the last 4 digits are the Brandis number as 4879 would fit well with our pattern of numbers.

I've asked the seller to try to find the Brandis serial number and any other numbers stenciled, imprinted, or written on the box.

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